but with the first lady among the victims, along with hillary clinton and vice president joe biden, the secret service is involved. the fbi is investigating because director robert mueller's information was posted. and the los angeles police department is on the case because chief charlie beck is also on the list. >> we will vigorously pursue the individuals who have me a victim and have made a number of other people who are in the public eye victims >> reporter: the only clue to the hackers' motivation is their shout=out to tv's vigilante serial killer, dexter. the web site includes a quote from the finale of season two: "if you believe that god makes miracles, you have to wonder if satan has a few up his sleeve." >> catherine: nasa now thinks that mars was once capable of supporting very simple forms of life. the discovery was made by the mars rover, which arrived on the red planet back in august. kron 4's charles clifford has more. >> reporter: for the past few months the curiosity rover has been exploring an area just north of the martian equator...here...near what's called the gale